I have a external drive usb 2 and i want to do a clone from drive to drive onto the usb 2 drive then clone it back onto the computer. The computers are p4 2.5ghz windows xp professional. I"m looking at driveimage xml, Paragon Drive Backup 10.1 free, and maxium reflect. So many to choice from anyone can comment on realiablity. I don't care if it slow just need something reilable. I hear terrible storys about true image.